/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License
 */

package com.example.android.apis.nfc;

import com.example.android.apis.R;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.IntentFilter.MalformedMimeTypeException;
import android.nfc.NfcAdapter;
import android.nfc.tech.NfcF;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

/**
 * An example of how to use the NFC foreground dispatch APIs. This will
 * intercept any MIME data based NDEF dispatch as well as all dispatched for
 * NfcF tags.
 */
public class ForegroundDispatch extends Activity {
	private NfcAdapter mAdapter;
	private PendingIntent mPendingIntent;
	private IntentFilter[] mFilters;
	private String[][] mTechLists;
	private TextView mText;
	private int mCount = 0;

	@Override
	public void onCreate(Bundle savedState) {
		super.onCreate(savedState);

		setContentView(R.layout.foreground_dispatch);
		mText = (TextView) findViewById(R.id.text);
		mText.setText("Scan a tag");

		mAdapter = NfcAdapter.getDefaultAdapter(this);

		// Create a generic PendingIntent that will be deliver to this activity.
		// The NFC stack
		// will fill in the intent with the details of the discovered tag before
		// delivering to
		// this activity.
		mPendingIntent = PendingIntent.getActivity(this, 0, new Intent(this,
				getClass()).addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP), 0);

		// Setup an intent filter for all MIME based dispatches
		IntentFilter ndef = new IntentFilter(NfcAdapter.ACTION_NDEF_DISCOVERED);
		try {
			ndef.addDataType("*/*");
		} catch (MalformedMimeTypeException e) {
			throw new RuntimeException("fail", e);
		}
		mFilters = new IntentFilter[] { ndef, };

		// Setup a tech list for all NfcF tags
		mTechLists = new String[][] { new String[] { NfcF.class.getName() } };
	}

	@Override
	public void onResume() {
		super.onResume();
		if (mAdapter != null)
			mAdapter.enableForegroundDispatch(this, mPendingIntent, mFilters,
					mTechLists);
	}

	@Override
	public void onNewIntent(Intent intent) {
		Log.i("Foreground dispatch", "Discovered tag with intent: " + intent);
		mText.setText("Discovered tag " + ++mCount + " with intent: " + intent);
	}

	@Override
	public void onPause() {
		super.onPause();
		if (mAdapter != null)
			mAdapter.disableForegroundDispatch(this);
	}
}
